Which of the following is a satellite system mentioned in the GMDSS subsystems?

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Multiple Choice

Which of the following is a satellite system mentioned in the GMDSS subsystems?

Explanation:
Global Maritime Distress and Safety System uses multiple paths to ensure messages get through, including satellite links for global coverage. One satellite-based network historically mentioned in GMDSS subsystems is provided by Inmarsat, with services like Inmarsat B that support two-way satellite communication for distress alerts, voice, and data. This makes it the satellite component among the options. NAVTEX is a coastal broadcast system using MF frequencies and is not satellite-based. SITOR is a land-based digital telex-like mode used on MF/HF radio. DSC is a digital calling method used on VHF/MF/HF frequencies via terrestrial channels.

Global Maritime Distress and Safety System uses multiple paths to ensure messages get through, including satellite links for global coverage. One satellite-based network historically mentioned in GMDSS subsystems is provided by Inmarsat, with services like Inmarsat B that support two-way satellite communication for distress alerts, voice, and data. This makes it the satellite component among the options. NAVTEX is a coastal broadcast system using MF frequencies and is not satellite-based. SITOR is a land-based digital telex-like mode used on MF/HF radio. DSC is a digital calling method used on VHF/MF/HF frequencies via terrestrial channels.

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